prosecutors won't say if they'll prosecute david gregory for showing a high capacity magazine on "meet the press." they're illegal in washington. even if they're not attached to a weapon. d.c. police says nbc actually asked if they could use the magazine on the show and their answer was no. coming up at 10:00 a.m. eastern time on "cnn newsroom," victor blackwell will talk with nra president david keen about gun rights in the wake of the newtown massacre. >>> coming up, how facebook's privacy policy may have come back to haunt its founder, mark zuckerberg. >>> plus the biggest celebrity scandals of 2012. omnipotent of opportunity. you know how to mix business... with business. and you...rent from national. because only national lets you choose any car in the aisle. and go. you can even take a full-size or above. and still pay the mid-size price. i could get used to this. [ male announcer ] yes, you could business pro. yes, you could. go national. go like a pro. yes, you could. why they have a raise your rate cd. tonight our guest, thomas sargent. nobel laureate in economics, and one of